Geoengineering, parts I, II, and III : hearing before the Committee on Science and Technology, House of Representatives, One Hundred Eleventh Congress, first session and second session, November 5, 2009, February 4, 2010, and March 18, 2010

Solar geoengineering and climate change

Sustainable, energy-efficient transportation infrastructure hearing before the Subcommittee on Technology and Innovation, Committee on Science and Technology, House of Representatives, One Hundred Tenth Congress, second session, June 24, 2008

Geoengineering : innovation, research, and technology : joint hearing before the Subcommittee on Environment & Subcommittee on Energy, Committee on Science, Space, and Technology, House of Representatives, One Hundred Fifteenth Congress, first session, November 8, 2017

Oversight hearing on the Environmental Protection Agency's implementation of the Safe Drinking Water Act's unregulated drinking water contaminants program : hearing before the Committee on Environment and Public Works, United States Senate, One Hundred Twelfth Congress, first session, July 12, 2011

Impacts of the proposed "Waters of the United States" rule on state and local governments: joint hearing before the Committee on Transportation and Infrastructure, U.S. House of Representatives and the Committee on Environment and Public Works, United States Senate, One Hundred Fourteenth Congress, first session, February 4, 2015

Oversight of the Army Corps of Engineers' participation in the development of the new regulatory definition of "Waters of the United States" : hearing before the Subcommittee on Fisheries, Water, and Wildlife of the Committee on Environment and Public Works, United States Senate, One Hundred Fourteenth Congress, first session, September 30, 2015

A hearing on the Marine Vessel Emissions Reduction Act of 2007 : hearing before the Committee on Environment and Public Works, United States Senate, One Hundred Tenth Congress, second session, February 14, 2008

Perspectives on ecosystem restoration projects of the U.S. Army Corps of Engineers : hearing before the Committee on Environment and Public Works, United States Senate, One Hundred Eighteenth Congress, first session, June 7, 2023

Committee markups of H.R. 1224, H.R. 1430, H.R. 1431, H.R. 2105, H.R. 2809, H.R. 2763, H.R. 1159, H.R. 4376, H.R. 4377, H.R. 4378, H.R. 4375, H.R. 4323, H.R. 4254, H.R. 3397, H.R. 4675, H.R. 5345, H.R. 5346, H.R. 5086, H.R. 5509, H.R. 5503, H.R. 5905, H.R. 5907, H.R. 5906, H.R. 6227, H.R. 6229, H.R. 6226, H.R. 6398, S. 141, and H.R. 6468 : compilation of markups before the Committee on Science, Space, and Technology, U.S. House of Representatives, One Hundred Fifteenth Congress, first and second session, 2017-2018